Orcad 16.6: problem with "Delete Unconnected Copper" command

Hello,

 when I lunch the command it works properly.

Here an example

https://ibb.co/kc0FPqV

If I stretch a trace the Dynamic Shape will be update properly (around the trace), but the void of previous unconnected copper remain.

https://ibb.co/c2WHNbc

Isi it possible to update voids?

Thanks

Stefano